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Hydrograph River at a Glance Download
South Fork Stillaguamish River near Granite Falls Stage (ft)Observed: 4.92 ft at 6:15PM May 25, 2023Observed: 4.92 ft at 6:30PM May 25, 2023Observed: 4.92 ft at 6:45PM May 25, 2023Observed: 4.92 ft at 7:00PM May 25, 2023Observed: 4.92 ft at 7:15PM May 25, 2023Observed: 4.93 ft at 7:30PM May 25, 2023Observed: 4.92 ft at 7:45PM May 25, 2023Observed: 4.93 ft at 8:00PM May 25, 2023Observed: 4.93 ft at 8:15PM May 25, 2023Observed: 4.92 ft at 8:30PM May 25, 2023Observed: 4.93 ft at 8:45PM May 25, 2023Observed: 4.94 ft at 9:00PM May 25, 2023Observed: 4.94 ft at 9:15PM May 25, 2023Observed: 4.94 ft at 9:30PM May 25, 2023Observed: 4.95 ft at 9:45PM May 25, 2023Observed: 4.95 ft at 10:00PM May 25, 2023Observed: 4.95 ft at 10:15PM May 25, 2023Observed: 4.96 ft at 10:30PM May 25, 2023Observed: 4.97 ft at 10:45PM May 25, 2023Observed: 4.97 ft at 11:00PM May 25, 2023Observed: 4.98 ft at 11:15PM May 25, 2023Observed: 4.98 ft at 11:30PM May 25, 2023Observed: 4.98 ft at 11:45PM May 25, 2023Observed: 5 ft at 12:00AM May 26, 2023Observed: 5 ft at 12:15AM May 26, 2023Observed: 5.02 ft at 12:30AM May 26, 2023Observed: 5.02 ft at 12:45AM May 26, 2023Observed: 5.02 ft at 1:00AM May 26, 2023Observed: 5.03 ft at 1:15AM May 26, 2023Observed: 5.04 ft at 1:30AM May 26, 2023Observed: 5.04 ft at 1:45AM May 26, 2023Observed: 5.06 ft at 2:00AM May 26, 2023Observed: 5.06 ft at 2:15AM May 26, 2023Observed: 5.06 ft at 2:30AM May 26, 2023Observed: 5.07 ft at 2:45AM May 26, 2023Observed: 5.07 ft at 3:00AM May 26, 2023Observed: 5.07 ft at 3:15AM May 26, 2023Observed: 5.08 ft at 3:30AM May 26, 2023Observed: 5.09 ft at 3:45AM May 26, 2023Observed: 5.09 ft at 4:00AM May 26, 2023Observed: 5.1 ft at 4:15AM May 26, 2023Observed: 5.1 ft at 4:30AM May 26, 2023Observed: 5.11 ft at 4:45AM May 26, 2023Observed: 5.11 ft at 5:00AM May 26, 2023Observed: 5.11 ft at 5:15AM May 26, 2023Observed: 5.11 ft at 5:30AM May 26, 2023Observed: 5.11 ft at 5:45AM May 26, 2023Observed: 5.12 ft at 6:00AM May 26, 2023Observed: 5.12 ft at 6:15AM May 26, 2023Observed: 5.12 ft at 6:30AM May 26, 2023Observed: 5.11 ft at 6:45AM May 26, 2023Observed: 5.11 ft at 7:00AM May 26, 2023Observed: 5.12 ft at 7:15AM May 26, 2023Observed: 5.12 ft at 7:30AM May 26, 2023Observed: 5.12 ft at 7:45AM May 26, 2023Observed: 5.12 ft at 8:00AM May 26, 2023Observed: 5.12 ft at 8:15AM May 26, 2023Observed: 5.11 ft at 8:30AM May 26, 2023Observed: 5.12 ft at 8:45AM May 26, 2023Observed: 5.12 ft at 9:00AM May 26, 2023Observed: 5.12 ft at 9:15AM May 26, 2023Observed: 5.11 ft at 9:30AM May 26, 2023Observed: 5.11 ft at 9:45AM May 26, 2023Observed: 5.11 ft at 10:00AM May 26, 2023Observed: 5.11 ft at 10:15AM May 26, 2023Observed: 5.12 ft at 10:30AM May 26, 2023Observed: 5.11 ft at 10:45AM May 26, 2023Observed: 5.11 ft at 11:00AM May 26, 2023Observed: 5.11 ft at 11:15AM May 26, 2023Observed: 5.11 ft at 11:30AM May 26, 2023Observed: 5.1 ft at 11:45AM May 26, 2023Observed: 5.1 ft at 12:00PM May 26, 2023Observed: 5.09 ft at 12:15PM May 26, 2023Observed: 5.09 ft at 12:30PM May 26, 2023Observed: 5.09 ft at 12:45PM May 26, 2023Observed: 5.09 ft at 1:00PM May 26, 2023Observed: 5.09 ft at 1:15PM May 26, 2023Observed: 5.09 ft at 1:30PM May 26, 2023Observed: 5.09 ft at 1:45PM May 26, 2023Observed: 5.09 ft at 2:00PM May 26, 2023Observed: 5.08 ft at 2:15PM May 26, 2023Observed: 5.08 ft at 2:30PM May 26, 2023Observed: 5.07 ft at 2:45PM May 26, 2023Observed: 5.06 ft at 3:00PM May 26, 2023Observed: 5.08 ft at 3:15PM May 26, 2023Observed: 5.07 ft at 3:30PM May 26, 2023Observed: 5.06 ft at 3:45PM May 26, 2023Observed: 5.06 ft at 4:00PM May 26, 2023Observed: 5.06 ft at 4:15PM May 26, 2023Observed: 5.06 ft at 4:30PM May 26, 2023Observed: 5.05 ft at 4:45PM May 26, 2023Observed: 5.05 ft at 5:00PM May 26, 2023Observed: 5.05 ft at 5:15PM May 26, 2023Observed: 5.04 ft at 5:30PM May 26, 2023Observed: 5.05 ft at 5:45PM May 26, 2023Observed: 5.05 ft at 6:00PM May 26, 2023Observed: 5.05 ft at 6:15PM May 26, 2023Observed: 5.04 ft at 6:30PM May 26, 2023Observed: 5.04 ft at 6:45PM May 26, 2023Observed: 5.04 ft at 7:00PM May 26, 2023Observed: 5.04 ft at 7:15PM May 26, 2023Observed: 5.05 ft at 7:30PM May 26, 2023Observed: 5.04 ft at 7:45PM May 26, 2023Observed: 5.04 ft at 8:00PM May 26, 2023Observed: 5.06 ft at 8:15PM May 26, 2023Observed: 5.04 ft at 8:30PM May 26, 2023Observed: 5.04 ft at 8:45PM May 26, 2023Observed: 5.05 ft at 9:00PM May 26, 2023Observed: 5.05 ft at 9:15PM May 26, 2023Observed: 5.06 ft at 9:30PM May 26, 2023Observed: 5.07 ft at 9:45PM May 26, 2023Observed: 5.07 ft at 10:00PM May 26, 2023Observed: 5.08 ft at 10:15PM May 26, 2023Observed: 5.08 ft at 10:30PM May 26, 2023Observed: 5.1 ft at 10:45PM May 26, 2023Observed: 5.1 ft at 11:00PM May 26, 2023Observed: 5.1 ft at 11:15PM May 26, 2023Observed: 5.11 ft at 11:30PM May 26, 2023Observed: 5.12 ft at 11:45PM May 26, 2023Observed: 5.14 ft at 12:00AM May 27, 2023Observed: 5.13 ft at 12:15AM May 27, 2023Observed: 5.14 ft at 12:30AM May 27, 2023Observed: 5.15 ft at 12:45AM May 27, 2023Observed: 5.16 ft at 1:00AM May 27, 2023Observed: 5.17 ft at 1:15AM May 27, 2023Observed: 5.16 ft at 1:30AM May 27, 2023Observed: 5.18 ft at 1:45AM May 27, 2023Observed: 5.18 ft at 2:00AM May 27, 2023Observed: 5.19 ft at 2:15AM May 27, 2023Observed: 5.18 ft at 2:30AM May 27, 2023Observed: 5.2 ft at 2:45AM May 27, 2023Observed: 5.21 ft at 3:00AM May 27, 2023Observed: 5.21 ft at 3:15AM May 27, 2023Observed: 5.21 ft at 3:30AM May 27, 2023Observed: 5.2 ft at 3:45AM May 27, 2023Observed: 5.22 ft at 4:00AM May 27, 2023Observed: 5.22 ft at 4:15AM May 27, 2023Observed: 5.22 ft at 4:30AM May 27, 2023Observed: 5.22 ft at 4:45AM May 27, 2023Observed: 5.23 ft at 5:00AM May 27, 2023Observed: 5.22 ft at 5:15AM May 27, 2023Observed: 5.23 ft at 5:30AM May 27, 2023Observed: 5.23 ft at 5:45AM May 27, 2023Observed: 5.22 ft at 6:00AM May 27, 2023Observed: 5.22 ft at 6:15AM May 27, 2023Observed: 5.22 ft at 6:30AM May 27, 2023Observed: 5.22 ft at 6:45AM May 27, 2023Observed: 5.22 ft at 7:00AM May 27, 2023Observed: 5.22 ft at 7:15AM May 27, 2023Observed: 5.22 ft at 7:30AM May 27, 2023Observed: 5.22 ft at 7:45AM May 27, 2023Observed: 5.22 ft at 8:00AM May 27, 2023Observed: 5.21 ft at 8:15AM May 27, 2023Observed: 5.21 ft at 8:30AM May 27, 2023Observed: 5.22 ft at 8:45AM May 27, 2023Observed: 5.2 ft at 9:00AM May 27, 2023Observed: 5.2 ft at 9:15AM May 27, 2023Observed: 5.19 ft at 9:30AM May 27, 2023Observed: 5.2 ft at 9:45AM May 27, 2023Observed: 5.19 ft at 10:00AM May 27, 2023Observed: 5.19 ft at 10:15AM May 27, 2023Observed: 5.18 ft at 10:30AM May 27, 2023Observed: 5.19 ft at 10:45AM May 27, 2023Observed: 5.18 ft at 11:00AM May 27, 2023Observed: 5.18 ft at 11:15AM May 27, 2023Observed: 5.17 ft at 11:30AM May 27, 2023Observed: 5.18 ft at 11:45AM May 27, 2023Observed: 5.16 ft at 12:00PM May 27, 2023Observed: 5.17 ft at 12:15PM May 27, 2023Observed: 5.16 ft at 12:30PM May 27, 2023Observed: 5.16 ft at 12:45PM May 27, 2023Observed: 5.16 ft at 1:00PM May 27, 2023Observed: 5.15 ft at 1:15PM May 27, 2023Observed: 5.15 ft at 1:30PM May 27, 2023Observed: 5.14 ft at 1:45PM May 27, 2023Observed: 5.14 ft at 2:00PM May 27, 2023Observed: 5.14 ft at 2:15PM May 27, 2023Observed: 5.13 ft at 2:30PM May 27, 2023Observed: 5.13 ft at 2:45PM May 27, 2023Observed: 5.13 ft at 3:00PM May 27, 2023Observed: 5.12 ft at 3:15PM May 27, 2023Observed: 5.11 ft at 3:30PM May 27, 2023Observed: 5.1 ft at 3:45PM May 27, 2023Observed: 5.11 ft at 4:00PM May 27, 2023Observed: 5.11 ft at 4:15PM May 27, 2023Observed: 5.1 ft at 4:30PM May 27, 2023Observed: 5.1 ft at 4:45PM May 27, 2023Observed: 5.09 ft at 5:00PM May 27, 2023Observed: 5.1 ft at 5:15PM May 27, 2023Observed: 5.09 ft at 5:30PM May 27, 2023Observed: 5.09 ft at 5:45PM May 27, 2023Observed: 5.08 ft at 6:00PM May 27, 2023Observed: 5.08 ft at 6:15PM May 27, 2023Observed: 5.08 ft at 6:30PM May 27, 2023Observed: 5.07 ft at 6:45PM May 27, 2023Observed: 5.07 ft at 7:00PM May 27, 2023Observed: 5.08 ft at 7:15PM May 27, 2023Observed: 5.07 ft at 7:30PM May 27, 2023Observed: 5.07 ft at 7:45PM May 27, 2023Observed: 5.08 ft at 8:00PM May 27, 2023Observed: 5.06 ft at 8:15PM May 27, 2023Observed: 5.07 ft at 8:30PM May 27, 2023Observed: 5.08 ft at 8:45PM May 27, 2023Observed: 5.07 ft at 9:00PM May 27, 2023Observed: 5.09 ft at 9:15PM May 27, 2023Observed: 5.09 ft at 9:30PM May 27, 2023Observed: 5.1 ft at 9:45PM May 27, 2023Observed: 5.1 ft at 10:00PM May 27, 2023Observed: 5.11 ft at 10:15PM May 27, 2023Observed: 5.11 ft at 10:30PM May 27, 2023Observed: 5.11 ft at 10:45PM May 27, 2023Observed: 5.12 ft at 11:00PM May 27, 2023Observed: 5.13 ft at 11:15PM May 27, 2023Observed: 5.14 ft at 11:30PM May 27, 2023Observed: 5.17 ft at 11:45PM May 27, 2023Observed: 5.16 ft at 12:00AM May 28, 2023Observed: 5.18 ft at 12:15AM May 28, 2023Observed: 5.19 ft at 12:30AM May 28, 2023Observed: 5.19 ft at 12:45AM May 28, 2023Observed: 5.2 ft at 1:00AM May 28, 2023Observed: 5.21 ft at 1:15AM May 28, 2023Observed: 5.22 ft at 1:30AM May 28, 2023Observed: 5.22 ft at 1:45AM May 28, 2023Observed: 5.22 ft at 2:00AM May 28, 2023Observed: 5.23 ft at 2:15AM May 28, 2023Observed: 5.24 ft at 2:30AM May 28, 2023Observed: 5.23 ft at 2:45AM May 28, 2023Observed: 5.23 ft at 3:00AM May 28, 2023Observed: 5.24 ft at 3:15AM May 28, 2023Observed: 5.24 ft at 3:30AM May 28, 2023Observed: 5.24 ft at 3:45AM May 28, 2023Highest Observation: 5.25 ft at 4:00AM May 28, 2023Highest Observation: 5.25 ft at 4:15AM May 28, 2023Observed: 5.23 ft at 4:30AM May 28, 2023Observed: 5.24 ft at 4:45AM May 28, 2023Observed: 5.23 ft at 5:00AM May 28, 2023Observed: 5.22 ft at 5:15AM May 28, 2023Observed: 5.22 ft at 5:30AM May 28, 2023Observed: 5.23 ft at 5:45AM May 28, 2023Observed: 5.22 ft at 6:00AM May 28, 2023Observed: 5.22 ft at 6:15AM May 28, 2023Observed: 5.22 ft at 6:30AM May 28, 2023Observed: 5.22 ft at 6:45AM May 28, 2023Observed: 5.21 ft at 7:00AM May 28, 2023Observed: 5.21 ft at 7:15AM May 28, 2023Observed: 5.2 ft at 7:30AM May 28, 2023Observed: 5.2 ft at 7:45AM May 28, 2023Observed: 5.19 ft at 8:00AM May 28, 2023Observed: 5.19 ft at 8:15AM May 28, 2023Observed: 5.19 ft at 8:30AM May 28, 2023Observed: 5.18 ft at 8:45AM May 28, 2023Observed: 5.19 ft at 9:00AM May 28, 2023Observed: 5.18 ft at 9:15AM May 28, 2023Observed: 5.17 ft at 9:30AM May 28, 2023Observed: 5.17 ft at 9:45AM May 28, 2023Observed: 5.17 ft at 10:00AM May 28, 2023Observed: 5.17 ft at 10:15AM May 28, 2023Observed: 5.15 ft at 10:30AM May 28, 2023Observed: 5.15 ft at 10:45AM May 28, 2023Observed: 5.15 ft at 11:00AM May 28, 2023Observed: 5.14 ft at 11:15AM May 28, 2023Observed: 5.14 ft at 11:30AM May 28, 2023Observed: 5.13 ft at 11:45AM May 28, 2023Observed: 5.12 ft at 12:00PM May 28, 2023Observed: 5.12 ft at 12:15PM May 28, 2023Observed: 5.13 ft at 12:30PM May 28, 2023Observed: 5.12 ft at 12:45PM May 28, 2023Observed: 5.12 ft at 1:00PM May 28, 2023Observed: 5.1 ft at 1:15PM May 28, 2023Observed: 5.09 ft at 1:30PM May 28, 2023Observed: 5.11 ft at 1:45PM May 28, 2023Observed: 5.1 ft at 2:00PM May 28, 2023Observed: 5.09 ft at 2:15PM May 28, 2023Observed: 5.1 ft at 2:30PM May 28, 2023Observed: 5.09 ft at 2:45PM May 28, 2023Observed: 5.08 ft at 3:00PM May 28, 2023Observed: 5.07 ft at 3:15PM May 28, 2023Observed: 5.07 ft at 3:30PM May 28, 2023Observed: 5.07 ft at 3:45PM May 28, 2023Observed: 5.07 ft at 4:00PM May 28, 2023Observed: 5.06 ft at 4:15PM May 28, 2023Observed: 5.06 ft at 4:30PM May 28, 2023Observed: 5.06 ft at 4:45PM May 28, 2023Observed: 5.04 ft at 5:00PM May 28, 2023Observed: 5.05 ft at 5:15PM May 28, 2023Forecast: 5.09 ft 11:00PM May 28, 2023Highest Forecast: 5.2 ft 5:00AM May 29, 2023Forecast: 5.16 ft 11:00AM May 29, 2023Forecast: 5.03 ft 5:00PM May 29, 2023Forecast: 5.03 ft 11:00PM May 29, 2023Forecast: 5.15 ft 5:00AM May 30, 2023Forecast: 5.1 ft 11:00AM May 30, 2023Forecast: 4.98 ft 5:00PM May 30, 2023Forecast: 4.97 ft 11:00PM May 30, 2023Forecast: 4.98 ft 5:00AM May 31, 2023Forecast: 4.96 ft 11:00AM May 31, 2023Forecast: 4.93 ft 5:00PM May 31, 2023Forecast: 4.91 ft 11:00PM May 31, 2023Forecast: 4.9 ft 5:00AM Jun 01, 2023Forecast: 4.88 ft 11:00AM Jun 01, 2023Forecast: 4.86 ft 5:00PM Jun 01, 2023Forecast: 4.85 ft 11:00PM Jun 01, 2023Forecast: 4.85 ft 5:00AM Jun 02, 2023Forecast: 4.84 ft 11:00AM Jun 02, 2023Forecast: 4.82 ft 5:00PM Jun 02, 2023Forecast: 4.82 ft 11:00PM Jun 02, 2023Forecast: 4.83 ft 5:00AM Jun 03, 2023Forecast: 4.83 ft 11:00AM Jun 03, 2023Forecast: 4.82 ft 5:00PM Jun 03, 2023Forecast: 4.83 ft 11:00PM Jun 03, 2023Forecast: 4.84 ft 5:00AM Jun 04, 2023Forecast: 4.84 ft 11:00AM Jun 04, 2023Forecast: 4.84 ft 5:00PM Jun 04, 2023USGS--Water Resources of the United StatesGFLW1(plotting HGIRG) Graph Created (6:05PM May 28, 2023)ObservedForecast (issued 8:21AM May 28)Latest observed value: 5.05 ft at 5:15 PM PDT 28-May-2023. Flood Stage is 14 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the South Fork Stillaguamish River near Granite Falls are issued routinely year-round.

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Upstream Gauge - above Verlot Upstream Gauge Downstream Gauge Downstream Gauge - at Jordan Br.
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 16
Flood Stage: 14
Action Stage: 12.9
Low Stage (in feet): 0

Historic Crests
(1) 22.82 ft on 11/06/2006
(2) 21.17 ft on 10/20/2003
(3) 20.44 ft on 11/18/2015
(4) 19.70 ft on 02/26/1932
(5) 18.50 ft on 12/12/2010 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.04 ft on 11/05/2022 (P)
(2) 15.04 ft on 03/01/2022 (P)
(3) 14.33 ft on 10/29/2021 (P)
(4) 14.32 ft on 01/13/2021 (P)
(5) 17.41 ft on 02/01/2020 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.99 ft on 08/19/1941
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
18 the South Fork Stillaguamish River will cause flooding of Jordan Road...the Robe Valley area upstream from Granite Falls...and Granite Falls downstream to the Blue Spruce area. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the South Fork Stillaguamish River Basin. A stage of 18 feet corresponds to Phase 4 in the Snohomish County Flood Warning System.
16 the South Fork Stillaguamish River will cause flooding in Granite Falls downstream to the Blue Spruce area and Jordan Road. A stage of 16 feet corresponds to Phase 3 in the Snohomish County Flood Warning System.
14 the South Fork Stillaguamish River will cause flooding along the river and tributaries. A stage of 14 feet corresponds to Phase 2 in the Snohomish County Flood Warning System.
About This Location Collapse

Latitude: 48.103889° N, Longitude: 121.944444° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 14 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 310.0 ft 324.0 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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